module.exports = (req, res, next) => {
  if (req.methods == 'POST' && req.path == '/login') {
    if (req.body.username == 'jack' && req.body.password == '123456') {
      return res.status(200).json({
        user: {
          token: '123',
        },
      });
    } else {
      return res.status(400).json({
        message: '用户名或者密码错误',
      });
    }
  }
  next();
};
